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二氧化钛光催化降解活性红24模拟染料废水

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Indexed by:期刊论文

Date of Publication:2013-04-15

Journal:大连交通大学学报

Included Journals:ISTIC

Volume:34

Issue:2

Page Number:87-92

ISSN No.:1673-9590

Key Words:二氧化钛;光催化;活性红24;脱色降解

Abstract:在紫外光和阳光下,研究了二氧化钛(TiO2)对活性红24(RR24)模拟染料废水的光催化脱色降解效果.研究表明,TiO2投加量、RR24溶液的初始浓度以及光照时间对其脱色降解均有影响.当RR24溶液初始浓度为10 mg/L,TiO2加入量为0.75 g/L,溶液初始pH为6,对200 mL RR24溶液光催化反应1h,其脱色率可达88.69%,CODCr和TOC的去除率分别达到47.2%和17.78%.空穴清除剂碘化钾和自由基清除剂异丙醇对TiO2光催化RR24溶液脱色降解影响研究表明,TiO2光催化RR24溶液降解机理是光致空穴h+和 OH共同参与的过程.TiO2光催化RR24溶液脱色降解遵循一级动力学反应.

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